A recent survey conducted by ZOOM and Applied Research & Consulting LLC reported that the events of

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A recent survey conducted by ZOOM and Applied Research & Consulting LLC reported that the events of September 11 have motivated kids to volunteer and that more than 80% volunteer. A disbeliever of this information took his own random sample of 500 kids in an attempt to show that the true percentage of kids who volunteer is less than 80%.

a. Find the p-value if 384 of the surveyed kids said they do community volunteer work.

b. Explain why it is important for the level of significance to be established before the sample results are known.

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Srikanth Penugonda

Hi, I am Srikanth, I belong to Andhra Pradesh, India. My recent qualification is Bachelor of Technology in Mechanical Engineering and presently I am pursuing my Postgraduation in School of Materials Science and Engineering from National Institute of Technology, Calicut. When I was a student at High School I developed a deep love and respect for the subject called Mathematics because of a teacher named Suresh who used to teach us all the concepts of Mathematics by using the most simple techniques.Because of this I have a very good and vast knowledge in all the concepts of Mathematics and I can teach any of them. At first let me describe about my education (Especially related to Mathematics). In my 10th standard I secured 97% marks, in my intermediate(12th standard) I secured 96% marks, in my 1st year of Engineering I secured 96% marks, in my 2nd year(1st semester) of engineering I secured 76% of marks and finally in the 2nd year (2nd semester) I secured 97% of marks in Mathematics. Apart from this I also have a very good knowledge in all concepts of Mechanical engineering subjects and also in concepts related to nanotechnology. Talking about my tutoring experience, when I was a student at high school, few of my friends who were not good in Mathematics and felt it as a difficult subject used to come to me and ask their doubts in study hours and I used to clarify them. I would like to share one more experience in my life, When I was an Undergraduate student, though I was from Mechanical Engineering background I had a lot of friends in the Department of Computer Science and Engineering. Many students from Computer Science Department felt Mathematics as one of the difficult subject. So to solve this problem we used to have a Group Discussion on every Sunday in which around 10 of my friends used to participate and I used to answer all the questions raised by them and clarify their doubts. Apart from this, since I am in my Postgraduation we have a program called Teaching Assistantship program in our course work, in this program every week we have to go and teach Undergraduate students. Thank You.

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